Attracted to the outside : a meso-scale response pattern of lesser black-backed gulls at an offshore wind farm revealed by GPS telemetry

Among seabirds, lesser black-backed gulls (Larus fuscus) are considered to be at high risk of colliding with offshore wind turbines. In this respect, we used GPS tracking data of lesser black-backed gulls caught and tagged in two colonies along the Belgian North Sea coast (Ostend and Zeebrugge) to s...

Full description

Bibliographic Details
Published in:ICES Journal of Marine Science
Main Authors: Vanermen, Nicolas, Courtens, Wouter, Daelemans, Robin, Lens, Luc, Müller, Wendt, Van de walle, Marc, Verstraete, Hilbran, Stienen, Eric W M
Other Authors: Votier, Stephen
Format: Article in Journal/Newspaper
Language:English
Published: 2020
Subjects:
Biology and Life Sciences
Ecology
Aquatic Science
Evolution
Behavior and Systematics
Oceanography
avoidance
collision risk
GPS telemetry
impact assessment
lesser black-backed gull
offshore wind farm
MARINE BIRD POPULATIONS
HARNESS ATTACHMENT
LARUS-FUSCUS
MODELS
SEABIRDS
DISCARDS
Thornton
Lesser black-backed gull
Online Access:https://biblio.ugent.be/publication/8659370
http://hdl.handle.net/1854/LU-8659370
https://doi.org/10.1093/icesjms/fsz199
https://biblio.ugent.be/publication/8659370/file/8661994
Description
Summary:Among seabirds, lesser black-backed gulls (Larus fuscus) are considered to be at high risk of colliding with offshore wind turbines. In this respect, we used GPS tracking data of lesser black-backed gulls caught and tagged in two colonies along the Belgian North Sea coast (Ostend and Zeebrugge) to study spatial patterns in the species’ presence and behaviour in and around the Thornton Bank offshore wind farm (OWF). We found a significant decrease in the number of GPS fixes of flying birds from up to a distance of at least 2000 m towards the middle of the wind farm. Non-flying birds showed a similar avoidance of the wind farm interior, yet presence strongly peaked right at the wind farm’s edge, demonstrated to represent gulls perching on the outer turbine jacket foundations. The findings of this study reveal a strong within-wind farm variability in bird density, a most crucial parameter in collision risk modelling. The method presented here is straightforward and similar studies conducted at other wind farm sites on a range of large gull species (Larus sp.) would allow to assess the potential and species-specific variation in meso-scale response patterns and to gain insight in the underlying ecological incentives, which in turn would provide widely applicable and much-needed input for (cumulative) collision impact assessments.

Similar Items